Adjusting mechanism for rolling-mills.



M- F. MCCONNELL.

v ADJUSTINGMECHANISM- FOR ROLLING mus.

APPLICATION FILED SEPT-22 1915- U 1,218,286, I Patented Mar. 6,1917.

2 SHEETS-SHEET I.

FIG. 2

F.McCONNELL. ADJUSTING MECHANISM FOR ROL'LlN G MILLS. APPLICATION HL ED SEPT. 22. ms.-

Patented Mar. 6, 1917'.

- 2 SHEETSSHEET 2.

FIG. 3

FIG. 4

WITN ESQES imvgm'gn universal plate mills,

'nsrrso smiths merrier ossros;

LL, 0F STEUBENVILLE, OHIG.

' .fil -JUSTING IMECHjhhIISlH F03 ROLLING- MILLS.

m mama v To ail whom it may comer Be it known that I, ltleitoomr F. MCCON NELL, a. citizen of the United States, residing in Steubenvillgin the county of .l'ef ferson and State of Ohio, have invented certain new and useful Improvements in Adjusting Mechanisms for Rolling-Mills, of which the following is a specification.

My invention relates to the construction of roll adjusting mechanisms for rolling mills and. more particularly the roll. ing mechanism of two-high reversing mills,

and similar apparatus having a. movable top roll which is adjusted toward or away from its opposite roll after each reducing pass of the metal.

screw down mechanism of a, two-high reversing blooming mill or mill used in rolling ingots into blooms, slabs, billets, and similar materials, Figure 1 ise. side elevetion. I J

2 is a plan, partly in section of the apparatus of 1.

Fig. 3 is a face elevation, partly in section of one form of clutch mechanism used with my invention.

Big. i is a radial section of the clutch ,mecha-nism of Fig. 3, the section. losing taken on theline l--l of Fig.

In the accompanying drawings, the verticelly' movable toproll it end the. lower roll (which is not shown) are rotetaloly mounted in bearing blocks and the hearing blocks are secured-in, the windows of the roll housings B, 8,321 the usual and well known manner. The hearing blocks for the -:i.djustable top or upper roll. A are secured to the lower ends of the threaded stems or screws Z, d, or which one emends downwardly through an opening' m the housings Specification of Letters I atent.

implication filed septelehcr :32, 15118. Serial 1%. 121,619Q

to provide into the upperend of each. housi'hg window into holding engagement with one of the. hezu'ingblocks. i a, v Mounted on top of each housing B is ,.;m ,internelly'threaded nut D- through which the threaded portion of the stemsfor screws of project, the nuts D losing rotatebly secured to the tops of the housings so as'ito prevent relative'lifting thereof when rotailed.

Each of the housing nuts D is provided Witl a worm wheel E and, each worm wheel is inmesh with fl worm F on worm shaft- G. The worm Wheels" 15ers fastened to the nuts D so as to rotete the the horizontal 1 nuts when the worm wheels ereturned by the worms F and the worms are keyed or otherwise secured to the worm shaft so as to rotate with the shaft. When the huts D arerotatcd the stems or screwed, d, are moved lengthwise and the upper roll A. which is secured to the screws throughthe roll bearing blocks is adjusted. vertically tovlmrd and away from the bottom or lower, rol I 1 sometimes happens that the soils jammed together when adjusting the top roll toward the bottom one so tightly that the motor has not power enough to again lift the top roll. Thereby much time is lost and expense incurred. I proposeto avoid this difiiculty by interposing net-Ween themotor and the roll a. clutch or equivalent vice which will work positively in one direction and lmpos trvely 111 the other.

v For example, I have shown a clutches the worm driving shaft which providesgonly a frictional engagement between thei'two parts G and G into which the Worm shaft is divided when. a downward adjustment of the roll is taking place, and a. positive engagement during a lifting adjustment. 'It is impossible with such a clutch togam the upper roll down so tightly that the motor cannot lift it. 1

The clutch may he of various types adapted to work this Way. In Fig. there is shown at drum K keyed on the shztft section G and carrying fiet' rings L engaging longitudine]. grooves v the rings L are rings. M engaging similar grooves in a. hub N on the" shaft section G The "need G of the drum holds the clusyh rings in place and they are held. in close frictionsl engagement by one or more ad:-

justohle springs E. W hen the section G or in the drum, and between is rotated, it has a strong frictional linent With the sectlon G, but

engagement to be beyond the T (:5 of the drum are mounted a eivy pmvls Q backed by abutwhich they are drawn by ezite'rnls outward he- (1 of the oruni and has shoul nomtions to engage the pewls O. H nei. ,iie "t-seetion G and the drum are turned in me direction of the full line arrow j; in Fig, !5 he LlIlVQ on the shaiibseetion G is only fr: ietrnel, the pewis riding over the shoulders T in case of any slipping iii-the l. hen the drum is turned in the direction of clotted line arrow, however, the clutch can elie only until the pZLWlS strike the shonl 1, after Which the drive is positive. in tlpe ease illustrated this positive drive in the direction to lift the upper roli,

Thou n vealeseyibetl with great particnl etziil pez'ticulei machine eniiqvenu'won, yet it is not to he understood therefrom-that the invention is restricted to the ya-rtioulei' machine elosecl. Various; modifications in detail sin in the arrangement of parts may me by those skilled. in the art Witl'iout departing, from "the invention,

1. A rolling mill having a motor-opemte-il roll-adjusting mechanism including a clutch between the. l'i'lGiI-Oi and the roll, elnteii adapted to work positively in one direction and inipositively in the othei.

2. A rolling mill having a, motor-operated screw-down mechanism including it clutch between the motor and the roll, seicl clutch adapted to Work positively in lifting the roll and impositively in screwing it clown.

3. A rollin mill having a, IXlOlZOT-0PQT2ilLd screw-down mechanism including Worm gearing actingon. "the bearings of a roll, a shaft driven by the motor and actuating said Worm gearing and a clutch in said shaft 2x121 pied to transmit the foice of the motor positively in lifting the roll and impositively in forcing; it down.

In witness whereof I have hereunto signed my name.

MALCQLM F- MoUGNNELL. 

